[time-nuts] distribution amp question + hp 59309A
john at miles.io
Sat Jan 28 23:17:51 EST 2017
> What is the general feeling here about this issue? I confess that if the amp
> output is transformer coupled, I see exactly zero benefit in a grounded
> connector as the feed from the amplifier.
This question comes up every so often. It comes down to whether you want your test setup to look like a loop antenna or a dipole antenna. Usually the loop is better if you're forced to accept one condition or the other. You shouldn't break, lift, or otherwise mess with coax shields without a very good reason. If you need a balanced connection, use a balanced medium.
Obviously if you're setting up a commercial 10base2 installation the rules are different. :) But for sensitive work with low signal levels in coax, you will most often be better off if all of your gear looks like a series of monolithic metal bricks. Ground loops are not the worst thing that can happen to a precision T&F measurement.
-- john, KE5FX
Miles Design LLC
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